Cut-off-valve gear



(No maden.)

J. P. BENOIT..

GUT-OPF VALVE GEAR. No. 288,297. Patented Nov. 18, 1888.

' UNITED STATES PATENT runen.

JOHN P. BENOIT, OF DETROIT, MICHIGAN.

CUT-OFF-VALVE GEAR.

SPECIFICATION forming` part of Letters Patent No. 288,297, dated November 13, 188:?.

Application led April 19, 1883. (No model.) I

To @ZZ whom it may concern.:

' t ne it knownv that i, JOHN r. BENOIT, of

` the valve-rod Gis pivoted.

Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Cut-Oi-Valve Gears; and'I do hereby declare thattheiolloxving is afull, clear, and exact description thereof, reference being had to the accompanying drawing' Which forms a part of this specification.

This inventionrefers to an improvement in cutoff-valve gears; and it consists in the peculiar arrangements and construction of the parts, all as more fully hereinafter described.

In the accompanying drawing a diagram elevation of my improved cutoff-valve gear is shown, wherein A is the eccentric-rod, while C is the valve-rod connected to the cut-off valve. D is a lever ofthe thirddegree, with its inici-um at a., Where it is pivoted to the lower end of the governing-rod E. At b the eccentric-rod B is pivoted thereto, and at c This latter pivot runs in a slot, d, in the lever D. E is a governor, of known construction and operation, and it is so arranged as to actuate the governing-rod E in a positive manner, so as to raise or lower the lever D in the same degree as the rod E is acted upon.

In practice the action of the governor will automatically control the length of the leverage between the fulcruma and the pivot c, which is prevented from following the ymovement of the lever D by a guide or journal, g, holding the end of the valve-rod C in position. The interposition of a third-degree lever, hung from the governor and betwecnthe eccentric and the valve rod, gives to my device the necessary latitude for cutting off, and renders the device both simple and eiiicient. It is clear that this cut-oH-valve gear may be applied to any kind of valve.

What I claim as my invention is In a cut-off-valve gear, the combination of vthe eccentric-rod B, the valve-rod C, the lever D, interposed between them, and hung from the lower end of the rod E of a governor, F, and connected near its middle to the eccentric-rod, and near its lower end to the valve-rod, substantially as and for the purposes described.

JOHN I?. BENOIT.

. Witnesses: v H. S. SPRAGUE, E. W. ANDREWS. 

